Created attachment 189190 [details] Test case from imageshack If you look at the attached test case, zoom in, then zoom out, you'll notice the two floats no longer line up.
D'oh... uploaded version doesn't work. I'll try again.
Created attachment 189195 [details] Test case from imageshack Trying again...
You don't need to zoom in/out to repro.
Isn't this a dupe of bug 109476? My local copy of the test certainly passes with http://trac.webkit.org/changeset/142659 applied and fails without it.
*** This bug has been marked as a duplicate of bug 109476 ***